. "Improving entanglement concentration of Gaussian states by local displacements" . "15310" . . "5"^^ . "P(7E08028), Z(MSM6198959213)" . . "84" . "1"^^ . "Improving entanglement concentration of Gaussian states by local displacements"@en . . . . . "1"^^ . "1050-2947" . . "203967" . . "RIV/61989592:15310/11:10224986!RIV12-MSM-15310___" . "1" . "000295822700003" . . . . "We investigate entanglement concentration of continuous-variable Gaussian states by local single-photon subtractions combined with local Gaussian operations. We first analyze the local squeezing-enhanced entanglement-concentration protocol proposed very recently by Zhang and van Loock [arXiv:1103.4500] and discuss the mechanism by which local squeezing before photon subtraction helps to increase the entanglement of the output state of the protocol. We next show that a similar entanglement improvement can be achieved by using local coherent displacements instead of single-mode squeezing." . "RIV/61989592:15310/11:10224986" . . "We investigate entanglement concentration of continuous-variable Gaussian states by local single-photon subtractions combined with local Gaussian operations. We first analyze the local squeezing-enhanced entanglement-concentration protocol proposed very recently by Zhang and van Loock [arXiv:1103.4500] and discuss the mechanism by which local squeezing before photon subtraction helps to increase the entanglement of the output state of the protocol. We next show that a similar entanglement improvement can be achieved by using local coherent displacements instead of single-mode squeezing."@en . . "Fiur\u00E1\u0161ek, Jarom\u00EDr" . . "Improving entanglement concentration of Gaussian states by local displacements" . "[1C0C4205F0C6]" . . . "INFORMATION; DISTILLATION"@en . "Improving entanglement concentration of Gaussian states by local displacements"@en . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Physical Review A" .